The bubbles are due to the size of the Progasm, and no two Progasms will have identical bubbles. You are right, they will have no effect whatsoever in its performance, although I suppose that a Progasm with more bubbles in the tip might give an infitesimally greater amount of movement, because the tip would be lighter.

Because your rectum doesn't have eyes, it won't care about how ugly the bubbles look inside your Ice.

I would like to see a full pic of it, it looked kinda kool to me. I have wondered if the bubbles might affect the way the unit distributes vibration, like, at the climax of a contraction. As long as there is no posibility of the bubbles being too close to the outside of the unit, and collapsing(wich seems like would realy hurt you) it should be great.

I haven't seen mention made anywhere about the composition of the "bubbles". I think some may be assuming that they're made of air. I think they're just a different kind of plastic. Has anyone cracked open (intentionally or otherwise) a Progasm Ice, and found out?

Edit: Sorry, the point I forgot to make was that if it is just a different kind of plastic, I don't imagine that would affect its performance (in answer to what BigGlansDC asked).